Isizukulwana sesithathu se-semiconductors, emele i-gallium nitride (i-GaN) kunye ne-silicon carbide (i-SiC), iphuhliswe ngokukhawuleza ngenxa yeempawu zabo ezintle. Nangona kunjalo, indlela yokulinganisa ngokuchanekileyo iiparamitha kunye neempawu zezi zixhobo ukuze ucofe amandla abo kunye nokwandisa ukusebenza kakuhle kunye nokuthembeka kufuna izixhobo zokulinganisa ezichanekileyo kunye neendlela zobungcali.
Isizukulwana esitsha se-wide band gap (WBG) imathiriyeli emelwe yi-silicon carbide (SiC) kunye ne-gallium nitride (GaN) iya isetyenziswa ngokubanzi. Ngombane, ezi zinto zisondele kwii-insulators kune-silicon kunye nezinye izinto eziqhelekileyo ze-semiconductor. Ezi zinto ziyilelwe ukoyisa imida ye-silicon kuba yimathiriyeli emxinwa ye-gap kwaye ngenxa yoko ibangela ukuvuza okulambathayo kokusebenza kombane, okuye kubonakale ngakumbi njengoko ubushushu, amandla ombane okanye amaza onyuka. Umda onengqiqo kolu kuvuza kukuhamba okungalawulekiyo, okulinganayo nokungaphumeleli kokusebenza kwe-semiconductor.
Kwezi zixhobo zimbini ze-gap band, i-GaN ifaneleka kakhulu kwiinkqubo zokuphunyezwa kwamandla aphantsi naphakathi, malunga ne-1 kV nangaphantsi kwe-100 A. Enye indawo ebalulekileyo yokukhula kwe-GaN kukusetyenziswa kokukhanyisa kwe-LED, kodwa ikwakhula kwezinye izinto ezisetyenziswa amandla aphantsi. ezifana neemoto kunye nonxibelelwano lweRF. Ngokwahlukileyo koko, itekhnoloji ejikeleze i-SiC iphuhliswe ngcono kune-GaN kwaye ifaneleka ngcono kwizicelo zamandla eziphezulu ezifana ne-inverters ye-traction yesithuthi sombane, ukuhanjiswa kwamandla, izixhobo ezinkulu ze-HVAC, kunye neenkqubo zoshishino.
Izixhobo ze-SiC ziyakwazi ukusebenza kumbane ophezulu, iifrikhwensi zokutshintsha eziphezulu, kunye namaqondo obushushu aphezulu kunee-Si MOSFETs. Ngaphantsi kwezi meko, i-SiC inokusebenza okuphezulu, ukusebenza kakuhle, ukuxinana kwamandla kunye nokuthembeka. Ezi zibonelelo zinceda abaqulunqi banciphise ubungakanani, ubunzima kunye neendleko zabaguquli bamandla ukuze bakhuphisane ngakumbi, ngakumbi kumacandelo emarike anengeniso efana neenqwelomoya, izithuthi zomkhosi kunye nezombane.
Ii-SiC MOSFETs zidlala indima ebalulekileyo kuphuhliso lwezixhobo zokuguqula amandla esizukulwana esilandelayo ngenxa yokukwazi ukuphumeza ukusebenza kakuhle kwamandla kuyilo olusekwe kumacandelo amancinane. Olu tshintsho lukwafuna ukuba iinjineli ziphinde zityelele ezinye zeendlela zoyilo kunye novavanyo olusetyenziswa ngokwesiko ukwenza amandla ombane.
Imfuno yovavanyo olungqongqo iyakhula
Ukuqonda ngokupheleleyo amandla ezixhobo ze-SiC kunye ne-GaN, imilinganiselo echanekileyo iyafuneka ngexesha lokutshintsha ukusebenza ukuze kuphuculwe ukusebenza kakuhle kunye nokuthembeka. Iinkqubo zovavanyo lwezixhobo ze-SiC kunye ne-GaN semiconductor kufuneka zithathele ingqalelo amaza okusebenza aphezulu kunye nombane wezi zixhobo.
Ukuphuhliswa kovavanyo kunye nezixhobo zokulinganisa, ezifana neejeneretha ezisebenzayo (AFGs), i-oscilloscopes, izixhobo zokulinganisa umthombo (i-SMU) izixhobo, kunye nabahlalutyi beparameter, inceda iinjineli zokuyila amandla ukuba zifezekise iziphumo ezinamandla ngakumbi ngokukhawuleza. Olu phuculo lwezixhobo luyabanceda ukuba bamelane nemingeni yemihla ngemihla. "Ukunciphisa ilahleko zokutshintsha kuhlala kungumngeni omkhulu kwiinjineli zezixhobo zamandla," utshilo uJonathan Tucker, intloko ye-Power Supply Marketing eTeck/Gishili. Olu yilo kufuneka lulinganiswe ngokungqongqo ukuqinisekisa ukuhambelana. Enye yeendlela zokulinganisa ezingundoqo zibizwa ngokuba luvavanyo lwe-pulse kabini (DPT), eyindlela eqhelekileyo yokulinganisa iiparamitha zokutshintsha kwee-MOSFETs okanye izixhobo zamandla ze-IGBT.
Ukuseta ukwenza uvavanyo lwe-SiC semiconductor kabini lwepulse lubandakanya: umsebenzi wejenereyitha ukuqhuba igridi yeMOSFET; I-Oscilloscope kunye nesoftware yohlalutyo lokulinganisa i-VDS kunye ne-ID. Ukongeza kuvavanyo lwe-pulse kabini, oko kukuthi, ukongeza kuvavanyo lwenqanaba lesekethe, kukho uvavanyo lwenqanaba lezinto eziphathekayo, uvavanyo lwenqanaba lecandelo kunye novavanyo lwenqanaba lenkqubo. Ukwenziwa kwezinto ezintsha kwizixhobo zovavanyo kwenze ukuba iinjineli zoyilo kuzo zonke izigaba zomjikelo wobomi zisebenze ngokubhekiselele kwizixhobo zokuguqula amandla ezinokuhlangabezana neemfuno zoyilo olungqongqo ngeendleko ezifanelekileyo.
Ukulungiselela ukuqinisekiswa kwezixhobo ekuphenduleni utshintsho olulawulayo kunye neemfuno ezintsha zobuchwepheshe bezixhobo zabasebenzisi bokugqibela, ukusuka kumandla ombane ukuya kwizithuthi zombane, zivumela iinkampani ezisebenza kumbane wombane ukuba zigxininise kwizinto ezintsha ezixabisekileyo kunye nokubeka isiseko sokukhula kwexesha elizayo.
Ixesha lokuposa: Mar-27-2023